Mining-machine.



1. SECRISTl IVHNKING MACHNE. APPLlc/JIQN FILED MAY 6. 1914.

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JOSEPH SECRIST, OF NUTTALBURG, WEST VIRGINIA.

MINING-MACHINE.

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West Virginia, have invented certain new and useful Improvements inMiningMachines,'of which the following is a specification, referencebeing had tothe accompany-l ing drawings. i

lThis invention relates'to new and useful improvements 1n miningmachines, and more particularlyto a machine for mining coal,

and oneobject of the invention is to provide an apparatusof thisicharacter thatl shall combine simplicity of construction with thehighest practicabllityl and durability in use andthe maximumoffeiiioiency in operation,

and that shall inmany instances, be adapted to supersede the miningmachines in common use. y v 4 A further object is to arrange the'mechanismin such manner that power employed to operate the auger shallalso be utilized in propelling the apparatus in forward and lateraldirections. g i

With the above and other objects in .view as will appear as the natureof the invention is better understood, the same consists in .the novelconstruction and combination of arts of a coal mining machine and aswill be hereinafter fully described and claimed.

'In the accompanying drawing forming a -part of this specifica-tion, andin which like characters of reference indicate thel corresponding parts:Figure 1 is a view in vertical longitudinal section through an apparatusconstructed in accordance with the present invention, the section beingtaken on the line 1-1 of Fig. 2; Fig. 2 is a top plan view; Fig. 3 is ahorizontal sectional view taken on the line 3--3 of Fig. l; Fig. 4 is asimilar view taken on the line 4 4 of Fig. 1; Fig. 5 is a perspectivedetail view 'of one of the drums; and Fig. 6 is a similar view of one ofthe clutch members.

Referring to the drawings, 1 designates generally a housing .or casing,to the under side of which are 4secured skids S such as are usuallyemployed in connection with machines of thischaracter to facilitatetheir being moved over the iioor of the mine. The housing comprises avertical end Wall 2, two vertical side walls 3, an intermediate wall 4,a bottom wall 5, a top wall 6, a horilzontalwall 7, and a vertical endwall 8 lo-A Specication of Letters Patent.

Patented Nov. 16, 1915.

Application led May 6, 1914. Serial No. 836,780.

cated -atthe end of the casing opposite that at which the wall 2 isdisposed. v

Journaled in the walls 2 and 4 is a shaft -9 carrying on its outer endan auger 10 which projects free of the wall 2 and at its lnner end aworm 11, the latter meshing with a worm wheel 12 carried by the upperend of a shaft 13 journaled in the wall 7, the lower end of the shaftbeing journaled 1n the bottom wall 5, and carries'thereon a pinion 14that meshes with the gear'wheel `15 mounted on the lower endv'of a shaft16, the upper end of which projects through the wall 7 and carries apinion 17.

Journaled in the walls 2 and 4 is a shaft "18 that carries a motor'19 ofany preferred type, the inner endy of the shaft within the wall 4 havingsecured to it, a pinion 20 that meshes with a pinion 21 on theishaft 9,back of the worm-1l. ,By this means, it will be seen that when the motoris driven, its motln is vtransmitted through the gears 20 and 21 to theauger shaft 9 and through the I, i

each drum being provided with a clutchY member 2.8, and these clutchmembers are in turn engaged by clutch members 29eand 30 keyed to theupper ends of th shafts 22 and 23. As will be understood, the drums fare loosel on the shafts, and are only`r`enf dered operable for rotationwhen the two clutch members of each drum are in locked engagement. Inorder to manipulate the clutch members 29 and 30 there is combined witheach fof these members a clutch lever 31 and 32, respectively, which, inthe manner common to such mechanical devices, will operate to 'controlthe action` of the drums through the medium of the clutch-ed faces.

Arranged on each side of the casing at 1its forward or auger carryingend, are two sheaves 33 and 34 which are mounted on brackets 35 securedtothe side walls of the casing. These sheaves are designed to be engagedby cables 36 and 37 which are wound about the drums, and one end of thecable 36 will be secured in any rigid manner' cable being to hold theauger to its work, f

and that of the second to permit a lateral movement to be imparted tothe casing, thus to enable the auger to make a face cut and carry acrossthe drift or coal wall.

In the operation of my mining mechanism, after both the cables have beenanchored to the breast of the coal the motor is started and the clutchescontrolling both drums are thrown into engagement to clutch the drums totheir respective shafts, whereupon the supporting frame or casing willbe moved forward toward the breast of the coal and the cutting augerWill be driven /thereinto until the full depth of cut has been made. Ifthe mining machine is to be moved to the left as in Fig. 2, then thecable 37 is anchored laterally as illustrated in Fig. 2 and then theclutch member of the drum 26 is shifted to disengage the drum 26 fromits shaft, and thus power is applied to the drum 27. This winds up onthe cable 37 and causes the casing to be moved laterally, the cable 36being paid out gradually by any suitable means as the machine movesalong the breast of the coal, it being understood that only enough ofthe cable 36 is paid out to permit just sufficient transverse movementof the machine without permitting the adjacent end of themachine to moveoutward away from the wall of coal. When the limit of movement in thisdirection has 'been reached the drum 27 is disengaged from its drivingshaft and the drum 26 engaged, whereby the device may be brought back toits original position.

It is to be noted that the cables are so connected to the supportingframework or casing of the machine that a rotation of both drums willdraw the framework toward the breast of coal, while a rotation of onedrum in one direction with the release of the other drum and slackeningof the corresponding cable will cause the transverse movement of themachine. This is secured by passing the cables 36 and 37 around thepulleys 33 and 34 respectively, instead of passing these cables directlyfrom the casing to the lateral walls of the shaft or to lateralanchoring means.

Having thus described my invention, what I claim is:

In a mining machine, a supporting frame, a horizontal shaft mountedthereon and carrying a cutter elongated in the direction of the axis ofthe shaft, a motor mounted above the shaft and including a shaftcarrying a gear wheel, a gear wheel on the cutter shaft meshingtherewith7 a screw formed upon the cutter shaft, a gear wheel with whichsaid screw engages, a driven shaft operatively engaged with the lastnamed gear wheel, oppositely disposed drum shafts, gear wheels mountedthereon and engaging with the last named gear wheel for movement in thesame direction, drums loosely mounted on said shafts, clutches wherebyeither one of said drums may be disengaged from its respective shaft orengaged therewith, cables mounted upon said drums, and pulleys mountedupon the forward end of said frame over which the said cables pass, theends of said cables being adapted to be anchored.

In testimony whereof. I hereunto affix my signature in the presence oftwo witnesses.

. JOSEPH SECRIST. Witnesses E. A. COMEK, BIDDIE BARKER.

